Bump @babel/preset-env from 7.5.5 to 7.6.0

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.5.5 to 7.6.0.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.5.5...v7.6.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -51,7 +51,7 @@
 	"devDependencies": {
 		"@babel/core": "^7.5.5",
 		"@babel/plugin-syntax-dynamic-import": "^7.0.0",
-		"@babel/preset-env": "^7.5.5",
+		"@babel/preset-env": "^7.6.0",
 		"@vue/test-utils": "^1.0.0-beta.29",
 		"babel-eslint": "^10.0.3",
 		"babel-jest": "^24.9.0",